Superior Mesenteric Artery Syndrome

Superior mesenteric artery syndrome is compression of third part of duodenum between aorta and SMA (narrowed aortomesenteric angle), due to rapid weight loss/cast/scarring, presenting with postprandial pain, bilious vomiting, and weight loss. Treatment: nutritional support/weight gain (enteral/TPN); posture changes (knee-chest/prone); nasojejunal feeding beyond obstruction; surgical duodenojejunostomy if refractory; treat underlying cause (scoliosis/cast); monitor for electrolyte/nutrition deficits; follow-up.

Common Symptoms

Postprandial pain; bilious vomiting; weight loss; by rapid weight loss/cast

Causes and Pathogenesis

Loss of mesenteric fat narrows aortomesenteric angle, compressing duodenum.

Treatment

Nutrition/weight gain; posture changes; surgery if refractory

Preventive Measures

Avoid rapid weight loss; maintain healthy weight.

Department to Visit

It is recommended to visit the Gastroenterology/Gastrointestinal-surgery/Nutrition department; an appointment can be booked on this platform before the visit.

Warm reminder: The above information is for health science reference only and cannot replace professional medical diagnosis. If you have related symptoms, please seek medical attention at a regular hospital promptly.